Pen top



FIG. 1 is a perspective view from the front, top and right side, of a pen top showing my new design, with the broken lines showing environmental matter for illustrative purposes only and forming no part of the claimed design;

FIG. 2 is a perspective view from the rear, bottom and left side of FIG. 1;

FIG. 3 is a left side elevational view of FIG. 1, the right side being a mirror image thereof;

FIG. 4 is a front elevational view of FIG. 1;

FIG. 5 is a rear elevational view of FIG. 1;

FIG. 6 is a top plan view of FIG. 1; and,

FIG. 7 is a bottom plan view of FIG. 1. 

The ornamental design for a pen top, as shown and described. 